Pressure Sensors

The GP:50 271 and 371 WECO Hammer Union Temperature Transmitter series is a highly ruggedized, industrial-grade thermal sensor engineered explicitly to provide high-accuracy medium temperature tracking within high-pressure oilfield service lines and severe vibration environments. Built to integrate seamlessly directly into standard fluid manifolds, the 271 and 371 architecture is designed for full compatibility with 2-inch 1502, 2002, or 2202 WECO Wing Union fittings.

The entire assembly features massive physical structural strength, carrying a certified pressure rating up to 22,500 PSI (1,551 BAR) while utilising corrosion-resistant wetted parts that meet strict NACE MR0175 guidelines. It delivers stable thermal tracking across a calibrated processing range from -40°F to +250°F (-40°C to +121°C), outputting clean 4-20 mA or 0 to 5 Vdc signals, alongside specialized RS232, CANbus, or RS485 digital telemetry options. For deployment in volatile well servicing zones, it can be ordered with comprehensive ATEX intrinsically safe approvals to ensure maximum regulatory plant safety.

The GP:50 188 Mini Flush Transmitter is a highly compact, premium hydrostatic pressure transducer custom-engineered to deliver precise fluid telemetry within extremely restricted spaces and severe vibration environments. Designed specifically to eliminate dead volume and prevent process fouling, the Model 188 architecture utilizes a specialised 7/16-20 UNF miniature flush process connection.

This unique flat-profile configuration allows the sensor face to interface seamlessly with high-viscosity or particle-heavy media without port clogging or packing errors. The robust, single-piece structural frame is manufactured entirely from high-grade, all-welded stainless steel, with alternative wetted options including Hastelloy or Inconel to withstand aggressive chemical environments. Operating across an expansive pressure range scaling up to 10,000 PSI (690 bar), it delivers a high static accuracy starting from ±0.5% FS down to an ultra-precise ±0.05% FS resolution tier. Outfitted with an integrated NIST-traceable calibration certificate as standard, this miniature sensor can be equipped with secondary internal temperature output sensors (RTD, Type J, or Type K thermocouples) to provide simultaneous thermal and pressure data streaming from a single space-saving installation footprint.

The GP:50 240 and 340-IM Flush Mount Pressure Sensors represent a specialised line of industrial sensors custom-engineered to monitor high-viscosity or semi-solid process media without logging catastrophic clogging errors. Purpose-built for volatile fracturing environments and heavy process loops, the 40-IM architecture utilises a zero-clearance, completely flush face sensing diaphragm that prevents grease, sand, and liquid accumulation in the transmitter port.

The robust, all-welded housing utilises an ultra-durable Inconel design to provide premium compatibility across corrosive, abrasive, and sour media streams. These advanced units completely eliminate mechanical strain offsets, ensuring that zero offset or signal drift is caused during sensor installation or tight pipe connection torque cycles. Operating smoothly across high-pressure envelopes ranging from 0-75 up to 0-750 PSI (5 to 52 BAR), the series delivers standard amplified 4-20mA or 0-5Vdc signals and carries global ATEX and IEC certifications for intrinsically safe operations inside hazardous oilfield and water processing grids.

The GP:50 280/380 and 283/383 Sanitary Tri-Clamp Pressure Sensors are a family of food, beverage, and pharmaceutical-grade process sensors engineered specifically for clean-in-place (CIP) environments and flush sanitary installations. Custom-built to provide exceptional long-term reliability without fluid contamination, the entire range is certified to strict 3A sanitary standards (Standard 74-03) for dairy and food processing footprints.

The architectural design features an all-welded, crevice-free 316L stainless steel body to eliminate bacterial propagation zones, with high-performance Inconel or Hastelloy wetted parts available for aggressive chemical washdown pipelines. Operating across a wide-spectrum of pressure ranging from ultra-low 0-30" WC up to 0-1,000 PSI, these transmitters supply high static accuracy starting from ±0.1% FSO. For extreme thermal operations, the specialised Model 383 can be equipped with integrated high-temperature compensation circuitry up to +204°C (+400°F). Complete with optional vented quick-disconnect cabling to deliver an automatic barometric reference on low-range lines, this series ensures unmatched structural integrity on hygienic processing footprints.

The GP:50 311-HD and 311-QX Cryogenic and High Temperature Pressure Sensors are elite, industrial-grade transducers custom-engineered to deliver reliable data acquisition within the most hostile thermal environments. Developed specifically to eliminate thermal drift and preserve signal integrity under extreme operational conditions, the 311-HD and QX architectures isolate delicate internal electronics using a remote-mounted transmitter enclosure

The processing media sensor head is mechanically decoupled and linked to the remote box via a heavy-duty, stainless steel armour-jacketed flexible cable available in multiple lengths. This rugged physical isolation allows the probe to withstand gruelling process temperatures ranging from cryogenic freeze environments as low as -195°C (-320°F) up to high-temperature test stand conditions reaching +177°C (+350°F). Operating on an loop-powered 4-20mA signal array, these advanced sensors minimise external signal noise while offering expansive protocol versatility. Also available in CANbus, RS485 Modbus, USB, or RS232 digital communications models, alongside field options for hazardous ATEX and CSA intrinsically safe approvals.

The GP:50 311-M351 Submersible Lift Station Sludge Level Transmitter is an industry-standard hydrostatic pressure sensor custom-engineered for the harsh environmental challenges of water treatment facilities, wet wells, and sewage infrastructure. Built with an all-welded, leak-proof stainless steel housing, the 311-M351 features a unique 3-inch large-diameter sensing diaphragm coupled with a heavy-duty, corrosion-resistant protective baffle plate.

This specialised open architecture is purposefully built to operate continuously in viscous fluids without clogging, facilitating exceptional accuracy even under dense grease and heavy sludge loading conditions. The fully encapsulated internal electronics contain highly robust RFI, EMI, and lightning surge protection arrays to protect data transmission channels against volatile electrical spikes. Operating reliably across a broad pressure  range from 0-5 to 0-500 PSI, this transmitter outputs standard 4-20mA, 0-5Vdc, or 3mV/V process signals to fit existing control platforms and ensure long-term, trouble-free deployment.

The GP:50 313G PVC Submersible Hydrostatic Level Transmitter is a specialised, corrosion-resistant level sensor custom-engineered for wastewater networks, processing sumps, and aggressive chemical storage tanks. Built with a highly durable, 3.175cm (1.25-inch) diameter polyvinyl chloride (PVC) housing, the 313G delivers long-term structural stability under the harsh conditions associated with industrial effluent and aggressive liquid media.

It features an advanced flush ceramic sensing diaphragm design that heavily minimises maintenance clean up time by preventing the build-up of grease, sludge, and bio-solid materials. Operating across low-pressure scales ranging from 0 to 3 PSI up to 0 to 30 PSI, this hydrostatic transmitter outputs a dependable, loop-powered 4-20 mA or optional 0-5 Vdc signal. For volatile deployment fields, the 313G can be specified with certified ATEX Zone 2 (II 3 G Ex nA/ic IIC T5 Gc) or Intrinsically Safe (II 1 G Ex ia IIC T5 Ga) explosion protections, providing precise liquid depth telemetry while ensuring strict plant safety regulations are met.

The GP:50 313L Submersible Level Sensor is a highly precise, industrial hydrostatic transmitter custom-engineered for continuous liquid depth monitoring in weirs, deep wells, water tanks, and reservoirs. Built to withstand long-term environmental immersion, the 313L features an all-welded, leak-proof 316L stainless steel body that encapsulates all internal electronics for maximum structural stability. This rugged sensor is equipped with internal RFI, EMI, and lightning surge protection circuitry to safeguard data signals during outdoor telemetry events.

Operating across pressure scales ranging from 0-20" WC up to 300 PSI (50 mbar to 21 bar), it delivers a highly stable 4-20 mA analogue output (or optional 0-5 Vdc / 3mV/V signals) via a premium Hytrel-jacketed cable assembly. Complete with an integrated atmospheric vent tube and a hydrophobic filter to prevent moisture ingress, this submersible sensor provides exceptional thermal stability and a calibrated static accuracy option reaching down to ±0.1% FSO.

The GP:50 313L-NI Titanium Submersible Level Pressure Transmitter is an elite, industrial-grade hydrostatic sensor custom-engineered for space-constrained down-hole deployments, environmental groundwater networks, and highly aggressive chemical processing lines. Built to withstand continuous long-term immersion in corrosive or caustic environments, the 313L-NI architecture features a slim 2.5cm (1-inch) diameter housing constructed entirely from high-grade titanium with a fully welded, leak-proof frame.

This advanced submersible unit is equipped with integrated lightning and surge suppression circuitry to safeguard remote data transmission lines during severe outdoor telemetry events. Operating across a wide pressure range from 0-20" WC up to 300 PSI, it delivers a precise, loop-powered 4-20 mA analogue output that integrates effortlessly into standard industrial automation networks. Backed by adjustable static accuracy bands up to ±0.1% FSO, a rugged Hytrel-jacketed cable assembly with an internal atmospheric vent tube, and a protective hydrophobic filter grid, this transmitter provides unmatched thermal stability and repeatable fluid level data tracking on challenging marine, municipal, and oilfield footprints.

The GP:50 340T Hazardous Location Temperature Transmitter is a highly rugged, industrial-grade thermal sensor engineered precisely for process control, chemical processing loops, and demanding automotive test stands. Developed to deliver reliable media tracking in extreme environments, the 340T architecture features a compact, all-welded stainless steel enclosure coupled with a heavy-duty probe rated to withstand high system pressures. It provides exceptional thermal stability with a native measurement accuracy of ±1.0% °F across maximum process temperatures reaching up to +159°C (+318°F).

Designed with system adaptability in mind, it outputs a clean 4-20 mA or 0 to 5 Vdc signal and offers flexible probe installation lengths ranging up to 178mm. Crucially for oil, gas, and volatile environments, the 340T comes equipped with global ATEX and IEC intrinsically safe and flameproof/explosion-proof approvals as standard, ensuring maximum operational safety on hazardous industrial footprints.

GP:50 Premium Sensor Cable Assemblies are a rugged, design to maintain pristine data transmission between high-accuracy pressure transmitters and data acquisition networks. Engineered to withstand harsh factory floors, automotive test cells, and severe outdoor fields, these specialised cables block external electrical noise that causes signal drift in low-voltage instrumentation. Whether routing data from a millivolt transducer, an amplified voltage sensor, or a digital fieldbus network, these premium assemblies protect system metrics from environmental degradation.

The GP:50 M/V/C Spike Series Hydraulically Durable Pressure Transducers are pressure sensors engineered specifically to withstand destructive, high-amplitude, and high-frequency pressure spikes common in dynamic hydraulic loops. Designed for aggressive process lines such as die casting machines, injection moulding systems, automotive stamping presses, and heavy industrial fluid controls, these robust sensors eliminate premature transducer failures. While typical tracking sensors are easily ruptured by fluid water-hammer effects, the Spike Series integrates a proprietary internal mechanical and structural safeguard array that safely absorbs sudden hydraulic shocks.

Constructed from a fully welded, single-piece premium stainless steel body, this rugged product line completely eliminates external seals, internal O-rings, and structural joints to ensure leak-free operation. The series is split into three functional electrical variants matching your process network's tracking configuration: the Model M-Spike outputs a raw millivolt signal (mV/V); the Model V-Spike provides an amplified analogue voltage loop (such as 0–5 VDC or 0–10 VDC); and the Model C-Spike utilizes an industry-standard 2-wire, 4–20mA current loop to prevent telemetry signal decay across noisy factory field.